4 * This contains all the functions needed to actually login.
13 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest);
14 static int aim_encode_password(const char *password, unsigned char *encoded);
16 faim_export int aim_sendconnack(struct aim_session_t *sess,
17 struct aim_conn_t *conn)
21 struct command_tx_struct *newpacket;
23 if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0001, 4)))
28 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
29 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
32 return aim_tx_enqueue(sess, newpacket);
36 * In AIM 3.5 protocol, the first stage of login is to request
37 * login from the Authorizer, passing it the screen name
38 * for verification. If the name is invalid, a 0017/0003
39 * is spit back, with the standard error contents. If valid,
40 * a 0017/0007 comes back, which is the signal to send
41 * it the main login command (0017/0002).
43 faim_export int aim_request_login(struct aim_session_t *sess,
44 struct aim_conn_t *conn,
48 struct command_tx_struct *newpacket;
50 if (!sess || !conn || !sn)
54 * For ICQ, we enable the ancient horrible login and stuff
55 * a key packet into the queue to make it look like we got
56 * a reply back. This is so the client doesn't know we're
57 * really not doing MD5 login.
59 * This may sound stupid, but I'm not in the best of moods and
60 * I don't plan to keep support for this crap around much longer.
61 * Its all AOL's fault anyway, really. I hate AOL. Really. They
62 * always seem to be able to piss me off by doing the dumbest little
63 * things. Like disabling MD5 logins for ICQ UINs, or adding purposefully
64 * wrong TLV lengths, or adding superfluous information to host strings,
68 if ((sn[0] >= '0') && (sn[0] <= '9')) {
69 struct command_rx_struct *newrx;
72 if (!(newrx = (struct command_rx_struct *)malloc(sizeof(struct command_rx_struct))))
74 memset(newrx, 0x00, sizeof(struct command_rx_struct));
76 newrx->hdrtype = AIM_FRAMETYPE_OSCAR;
77 newrx->hdr.oscar.type = 0x02;
78 newrx->hdr.oscar.seqnum = 0;
79 newrx->commandlen = 10+2+1;
81 if (!(newrx->data = malloc(newrx->commandlen))) {
86 i = aim_putsnac(newrx->data, 0x0017, 0x0007, 0x0000, 0x0000);
87 i += aimutil_put16(newrx->data+i, 0x01);
88 i += aimutil_putstr(newrx->data+i, "0", 1);
92 newrx->next = sess->queue_incoming;
93 sess->queue_incoming = newrx;
97 sess->flags &= ~AIM_SESS_FLAGS_SNACLOGIN;
102 sess->flags |= AIM_SESS_FLAGS_SNACLOGIN;
104 aim_sendconnack(sess, conn);
106 if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+2+2+strlen(sn))))
111 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0006, 0x0000, 0x00010000);
112 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
114 newpacket->commandlen = curbyte;
117 return aim_tx_enqueue(sess, newpacket);
121 * send_login(int socket, char *sn, char *password)
123 * This is the initial login request packet.
125 * The password is encoded before transmition, as per
126 * encode_password(). See that function for their
127 * stupid method of doing it.
130 * clientstring = "AOL Instant Messenger (SM), version 4.3.2188/WIN32"
136 * unknown = 0x00000086
141 faim_export int aim_send_login (struct aim_session_t *sess,
142 struct aim_conn_t *conn,
143 char *sn, char *password,
144 struct client_info_s *clientinfo,
148 struct command_tx_struct *newpacket;
150 if (!clientinfo || !sn || !password)
153 if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 1152)))
158 newpacket->hdr.oscar.type = (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)?0x02:0x01;
160 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)
161 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0002, 0x0000, 0x00010000);
163 curbyte = aimutil_put16(newpacket->data, 0x0000);
164 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
167 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
169 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) {
170 md5_byte_t digest[16];
172 aim_encode_password_md5(password, key, digest);
173 curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, (char *)digest);
175 char *password_encoded;
177 password_encoded = (char *) malloc(strlen(password));
178 aim_encode_password(password, password_encoded);
179 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0002, strlen(password), password_encoded);
180 free(password_encoded);
183 /* XXX is clientstring required by oscar? */
184 if (strlen(clientinfo->clientstring))
185 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring);
187 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) {
188 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, (unsigned short)clientinfo->major2);
189 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, (unsigned short)clientinfo->major);
190 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, (unsigned short)clientinfo->minor);
191 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, (unsigned short)clientinfo->minor2);
192 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, (unsigned short)clientinfo->build);
194 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown);
195 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015);
196 curbyte += aim_puttlv_8(newpacket->data+curbyte, 0x004a, 0x00);
198 /* Use very specific version numbers, to further indicate the hack. */
199 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, 0x010a);
200 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, 0x0004);
201 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, 0x003c);
202 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0001);
203 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, 0x0cce);
204 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x00000055);
207 if (strlen(clientinfo->country))
208 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country);
210 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, 2, "us");
212 if (strlen(clientinfo->lang))
213 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang);
215 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, 2, "en");
217 newpacket->commandlen = curbyte;
220 return aim_tx_enqueue(sess, newpacket);
223 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest)
228 md5_append(&state, (const md5_byte_t *)key, strlen(key));
229 md5_append(&state, (const md5_byte_t *)password, strlen(password));
230 md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING));
231 md5_finish(&state, (md5_byte_t *)digest);
237 * aim_encode_password - Encode a password using old XOR method
238 * @password: incoming password
239 * @encoded: buffer to put encoded password
241 * This takes a const pointer to a (null terminated) string
242 * containing the unencoded password. It also gets passed
243 * an already allocated buffer to store the encoded password.
244 * This buffer should be the exact length of the password without
245 * the null. The encoded password buffer /is not %NULL terminated/.
247 * The encoding_table seems to be a fixed set of values. We'll
248 * hope it doesn't change over time!
250 * This is only used for the XOR method, not the better MD5 method.
253 static int aim_encode_password(const char *password, unsigned char *encoded)
255 u_char encoding_table[] = {
256 #if 0 /* old v1 table */
257 0xf3, 0xb3, 0x6c, 0x99,
258 0x95, 0x3f, 0xac, 0xb6,
259 0xc5, 0xfa, 0x6b, 0x63,
260 0x69, 0x6c, 0xc3, 0x9f
261 #else /* v2.1 table, also works for ICQ */
262 0xf3, 0x26, 0x81, 0xc4,
263 0x39, 0x86, 0xdb, 0x92,
264 0x71, 0xa3, 0xb9, 0xe6,
265 0x53, 0x7a, 0x95, 0x7c
271 for (i = 0; i < strlen(password); i++)
272 encoded[i] = (password[i] ^ encoding_table[i]);
278 * This is sent back as a general response to the login command.
279 * It can be either an error or a success, depending on the
280 * precense of certain TLVs.
282 * The client should check the value passed as errorcode. If
283 * its nonzero, there was an error.
286 faim_internal int aim_authparse(struct aim_session_t *sess,
287 struct command_rx_struct *command)
289 struct aim_tlvlist_t *tlvlist;
291 rxcallback_t userfunc = NULL;
292 char *sn = NULL, *bosip = NULL, *errurl = NULL, *email = NULL;
293 unsigned char *cookie = NULL;
294 int errorcode = 0, regstatus = 0;
295 int latestbuild = 0, latestbetabuild = 0;
296 char *latestrelease = NULL, *latestbeta = NULL;
297 char *latestreleaseurl = NULL, *latestbetaurl = NULL;
298 char *latestreleaseinfo = NULL, *latestbetainfo = NULL;
301 * Read block of TLVs. All further data is derived
302 * from what is parsed here.
304 * For SNAC login, there's a 17/3 SNAC header in front.
307 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)
308 tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10);
310 tlvlist = aim_readtlvchain(command->data, command->commandlen);
313 * No matter what, we should have a screen name.
315 memset(sess->sn, 0, sizeof(sess->sn));
316 if (aim_gettlv(tlvlist, 0x0001, 1)) {
317 sn = aim_gettlv_str(tlvlist, 0x0001, 1);
318 strncpy(sess->sn, sn, sizeof(sess->sn));
322 * Check for an error code. If so, we should also
325 if (aim_gettlv(tlvlist, 0x0008, 1))
326 errorcode = aim_gettlv16(tlvlist, 0x0008, 1);
327 if (aim_gettlv(tlvlist, 0x0004, 1))
328 errurl = aim_gettlv_str(tlvlist, 0x0004, 1);
331 * BOS server address.
333 if (aim_gettlv(tlvlist, 0x0005, 1))
334 bosip = aim_gettlv_str(tlvlist, 0x0005, 1);
337 * Authorization cookie.
339 if (aim_gettlv(tlvlist, 0x0006, 1)) {
340 struct aim_tlv_t *tmptlv;
342 tmptlv = aim_gettlv(tlvlist, 0x0006, 1);
344 if ((cookie = malloc(tmptlv->length)))
345 memcpy(cookie, tmptlv->value, tmptlv->length);
349 * The email address attached to this account
350 * Not available for ICQ logins.
352 if (aim_gettlv(tlvlist, 0x0011, 1))
353 email = aim_gettlv_str(tlvlist, 0x0011, 1);
356 * The registration status. (Not real sure what it means.)
357 * Not available for ICQ logins.
360 * 2 = Limited disclosure
361 * 3 = Full disclosure
363 * This has to do with whether your email address is available
364 * to other users or not. AFAIK, this feature is no longer used.
367 if (aim_gettlv(tlvlist, 0x0013, 1))
368 regstatus = aim_gettlv16(tlvlist, 0x0013, 1);
370 if (aim_gettlv(tlvlist, 0x0040, 1))
371 latestbetabuild = aim_gettlv32(tlvlist, 0x0040, 1);
372 if (aim_gettlv(tlvlist, 0x0041, 1))
373 latestbetaurl = aim_gettlv_str(tlvlist, 0x0041, 1);
374 if (aim_gettlv(tlvlist, 0x0042, 1))
375 latestbetainfo = aim_gettlv_str(tlvlist, 0x0042, 1);
376 if (aim_gettlv(tlvlist, 0x0043, 1))
377 latestbeta = aim_gettlv_str(tlvlist, 0x0043, 1);
378 if (aim_gettlv(tlvlist, 0x0048, 1))
379 ; /* no idea what this is */
381 if (aim_gettlv(tlvlist, 0x0044, 1))
382 latestbuild = aim_gettlv32(tlvlist, 0x0044, 1);
383 if (aim_gettlv(tlvlist, 0x0045, 1))
384 latestreleaseurl = aim_gettlv_str(tlvlist, 0x0045, 1);
385 if (aim_gettlv(tlvlist, 0x0046, 1))
386 latestreleaseinfo = aim_gettlv_str(tlvlist, 0x0046, 1);
387 if (aim_gettlv(tlvlist, 0x0047, 1))
388 latestrelease = aim_gettlv_str(tlvlist, 0x0047, 1);
389 if (aim_gettlv(tlvlist, 0x0049, 1))
390 ; /* no idea what this is */
393 if ((userfunc = aim_callhandler(sess, command->conn, 0x0017, 0x0003)))
394 ret = userfunc(sess, command, sn, errorcode, errurl, regstatus, email, bosip, cookie, latestrelease, latestbuild, latestreleaseurl, latestreleaseinfo, latestbeta, latestbetabuild, latestbetaurl, latestbetainfo);
409 if (latestreleaseurl)
410 free(latestreleaseurl);
415 if (latestreleaseinfo)
416 free(latestreleaseinfo);
418 free(latestbetainfo);
420 aim_freetlvchain(&tlvlist);
426 * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed
427 * by only its length in a two byte word.
429 * Calls the client, which should then use the value to call aim_send_login.
432 faim_internal int aim_authkeyparse(struct aim_session_t *sess, struct command_rx_struct *command)
437 rxcallback_t userfunc;
439 keylen = aimutil_get16(command->data+10);
440 if (!(key = malloc(keylen+1)))
442 memcpy(key, command->data+12, keylen);
445 if ((userfunc = aim_callhandler(sess, command->conn, 0x0017, 0x0007)))
446 ret = userfunc(sess, command, (char *)key);
454 * Generate an authorization response.
456 * You probably don't want this unless you're writing an AIM server.
459 faim_export unsigned long aim_sendauthresp(struct aim_session_t *sess,
460 struct aim_conn_t *conn,
461 char *sn, int errorcode,
462 char *errorurl, char *bosip,
463 char *cookie, char *email,
466 struct command_tx_struct *tx;
467 struct aim_tlvlist_t *tlvlist = NULL;
469 if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0004, 1152)))
475 aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn));
477 aim_addtlvtochain_str(&tlvlist, 0x0001, sess->sn, strlen(sess->sn));
480 aim_addtlvtochain16(&tlvlist, 0x0008, errorcode);
481 aim_addtlvtochain_str(&tlvlist, 0x0004, errorurl, strlen(errorurl));
483 aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip));
484 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
485 aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email));
486 aim_addtlvtochain16(&tlvlist, 0x0013, (unsigned short)regstatus);
489 tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist);
492 return aim_tx_enqueue(sess, tx);
496 * Generate a random cookie. (Non-client use only)
498 faim_export int aim_gencookie(unsigned char *buf)
504 for (i=0; i < AIM_COOKIELEN; i++)
505 buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0));
511 * Send Server Ready. (Non-client)
513 faim_export int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn)
515 struct command_tx_struct *tx;
518 if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+0x22)))
523 i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++);
525 i += aimutil_put16(tx->data+i, 0x0001);
526 i += aimutil_put16(tx->data+i, 0x0002);
527 i += aimutil_put16(tx->data+i, 0x0003);
528 i += aimutil_put16(tx->data+i, 0x0004);
529 i += aimutil_put16(tx->data+i, 0x0006);
530 i += aimutil_put16(tx->data+i, 0x0008);
531 i += aimutil_put16(tx->data+i, 0x0009);
532 i += aimutil_put16(tx->data+i, 0x000a);
533 i += aimutil_put16(tx->data+i, 0x000b);
534 i += aimutil_put16(tx->data+i, 0x000c);
535 i += aimutil_put16(tx->data+i, 0x0013);
536 i += aimutil_put16(tx->data+i, 0x0015);
540 return aim_tx_enqueue(sess, tx);
545 * Send service redirect. (Non-Client)
547 faim_export unsigned long aim_sendredirect(struct aim_session_t *sess,
548 struct aim_conn_t *conn,
549 unsigned short servid,
553 struct command_tx_struct *tx;
554 struct aim_tlvlist_t *tlvlist = NULL;
557 if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 1152)))
562 i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000);
564 aim_addtlvtochain16(&tlvlist, 0x000d, servid);
565 aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip));
566 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
568 tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i;
569 aim_freetlvchain(&tlvlist);
572 return aim_tx_enqueue(sess, tx);